Finding the Fourth Proportional to 1,447.73, 1,997.89 and 784.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.73 : 1,997.89 = 784.59 : x
2. Step 2: Convert to fraction form
   1,447.73/1,997.89 = 784.59/x
3. Step 3: Cross multiply
   1,447.73x = 1,997.89 × 784.59
4. Step 4: Simplify right side
   1,447.73x = 1,567,522.55
5. Step 5: Solve for x
   x = 1,567,522.55/1,447.73
6. Step 6: Final answer
   x = 1,082.74